RECONFIGURATION METHOD FOR COMMUNICATION NETWORK WITH VIRTUALIZED RESOURCES
DOI:
https://doi.org/10.26906/SUNZ.2019.1.137Keywords:
NFV, resource allocation, mobile network, reconfiguration, node migrationAbstract
Given the enormous growth in mobile data traffic, on the one hand, and moderate average revenue per user, on the other hand, mobile operators are exploring network virtualization technologies and cloud computing technologies to build costeffective and flexible mobile networks and offer them as cloud-based services. The subject of study in the article are the configuration processes of the telecommunication network to solve the tasks of service load processing. The goal is to increase the efficiency of the network by reconfiguring the topology. Objective: to develop a mathematical model and an appropriate procedure for reconfiguring the telecommunication network resources of the in case of overloads or failures. The methods used are: graph approach and mathematical optimization models for the task of reallocation of network functions, simulation for research of the proposed method of resources reconfiguration in networks with virtualization. The following results are obtained. The article presents a method of virtual network computing resources local reconfiguration in case of a failure or overload. Conclusions. Obtained method takes into account the dynamic change in the service network topology, and unlike the existing ones, allows flexible determination of the computing service resources configuration, placing network functions with minimal costs, and decentralized monitoring of quality indicators. The method uses a heuristic model to determine the optimal location for migration of virtualized network functions from a physical node with a failure or overload, and the simulation results in the Mathcad system show an increase in resource efficiency. The conducted studies have shown the expediency of using the proposed solutions in improving existing telecommunication networks and in the construction of new perspective flexible, well-scalable networks of the telecom operator with full or partial application of the network functions virtualization principle.Downloads
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